Infrastructure Architecture Scenario

I am writing a mega scenario to use as a test for infrastructure architecture. This implies that it covers all the technical aspects of infrastructure. The elements or layers that I have are:

1. Hardware (routers, servers, client devices, storage (SANS / NAS))

2. Networks (Protocols, DNS / Bind, Wireless)

3. Directory (LDAP, AD, iplanet, NDS, edirectory)

4. Security (Kerberos, Certificates, IRM, Identity, federation)

5. Firewalls (Proxys and firewalls)

6. Web Servers (Apache, IIS)

7. File and Print (Windows, NFS, Novell)

8. Clients (Apple, Unix, Novell, 98, 3270, wireless, mobile, office, browser)

9. Database (DB types, Stored Procs, Data access, data formats)

10. Mail (Lotus, Groupwise, Exchange 5.5 Exchange 2000)

11. CRM (SAP, Peoplesoft, Siebel, Great Plains)

12. Applications (VB, Delphi, COM, J2EE, NET, Java / JSP, C++, Cobol)

13. Transactions (ES, MTS, OSITP, Tuxedo, J2EE, CICS, IMS)

14. Process (MSMQ, MQSERIES, Tibco RV)

15. Management (MOM, SMS, Tivoli, CA, HP)

16. Design and Ops (MSF, ITIL, MOF, COBIT)

17. Frameworks (Zachmann, FEAF, BAIT)

I know that this is a bit MS centric and may well be incomplete however have I missed any of the layers? Is there anything major that I’m missing in the layers?